MIL-PRF-39005G
3.24 High temperature exposure. When resistors are tested as specified in 4.8.20, there shall be no
evidence of mechanical damage. The change in resistance shall not exceed ±0.1 percent for resistance
values of 10 ohms and above, and ±(0.10 percent +0.01 ohm) for values less than 10 ohms. The material
used for marking of the resistor shall not be electrically conductive.
source code, and manufacturer's production lot code. Date and source codes shall be in accordance with
MIL-STD-1285. At the option of the manufacturer, the PIN may appear on two lines. In that case, the
PIN shall be divided between the terminal designation and the first digit of the resistance value. The
material used for marking of the resistor shall not be electrically conductive. The following is an example
of the complete marking:
12345
=
Source code
7333J
=
Date code and JAN marking
RBR52L
=
Type designation
12601FM
=
Type designation
XXXXXX
=
Manufacturer's production lot code
The date code shall be the date of the final assembly operation for the production lot as defined in
4.6.2.2. The common manufacturing record shall include the same date code as that placed on the parts
covered by the record. When the physical size of the resistor style precludes the marking of all the above
information, the minimum marking required shall be as specified (see 3.1). Marking shall remain legible
at the end of all tests. In those cases where full marking requirements are not on the resistor body, the
full marking shall be marked on the unit package.
3.25.1 JAN and J marking. The United States Government has adopted, and is exercising legitimate
control over the certification marks "JAN" and "J", respectively, to indicate that items so marked or
identified are manufactured to, and meet all the requirements of specifications. Accordingly, items
acquired to and meeting all of the criteria specified herein and in applicable specifications, shall bear the
certification mark "JAN" except that items too small to bear the certification mark "JAN" shall bear the
letter "J". The "JAN" or "J" shall be placed immediately before the part number except that if such a
location would place a hardship on the manufacturer in connection with such marking, the "JAN" or "J"
may be located on the first line above or below the part number. Items furnished under contracts or
orders which either permit or require deviation from the conditions or requirements specified herein and in
applicable specifications shall not bear "JAN" or "J". In the event an item fails to meet the requirements of
this specification and the applicable specification, sheets, the manufacturer shall remove completely the
military part number and the "JAN" or the "J" from the sample tested and also from all items represented
by the sample. The "JAN" or "J" certification mark shall not be used on products acquired to contractor
drawings or specifications. The United States Government has obtained Certification of Registration
Number 504,860 for the certification mark "JAN" and Registration Number 1,586,261 for the certification
mark "J".
3.25.1.1 Designation marking of resistance values for resistance tolerances A, B, Q, and T. The
designated marking of resistance values for resistance tolerances A, B, Q, and T when used with
nonstandard decade resistance values shall be as follows:
10
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